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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
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package org.apache.ofbiz.base.lang;

/** Factory interface. */
public interface Factory<R, A> {

    /** Returns an instance of <code>R</code>. This is a basic factory interface
     * that is meant to be extended. Sub-interfaces declare types for
     * <code>A</code> (the <code>getInstance</code> argument), and
     * <code>R</code> (the type returned by <code>getInstance</code>).
     *
     * @param obj Optional object to be used in <code>R</code>'s construction,
     * or to be used as a selector key
     * @return An instance of <code>R</code>
     */
    public R getInstance(A obj);

}
